upgrade to the higher efficiency of ec - ebm-papst uk · upgrade to the higher efficiency of ec ......
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Upgrade to the higher efficiency of EC
We’re committed to more sustainable energy efficiency
We’ll work alongside you to improve efficiency and cut cost
And we’ll deliver the quickest payback periods possible
The engineer’s choice
EC upgrade services
Reducing the energy consumption of your buildings
The engineer’s choice
EC upgrade services
Reducing the energy consumption of your buildings
Why consider upgrading to EC?
So what exactly is an EC motor and what are its benefits? Simply, it
is a mains fed, brushless, permanent magnet motor with electronic
commutation. The benefits, however, are outstanding.
EC motors are more than 90% efficient in converting electrical
input into air power. As a result, they consume up to 70% less
energy, compared to AC technology. And it has been shown that EC
cost savings can mean payback periods as good as 12 months.
There are several factors that combine to deliver this efficiency,
cost-effectiveness, and operational superiority:
• No need to induce current in the rotor
• Simpler winding means reduced copper losses
• Lower running temperature leading to increased life expectancy
• Quiet operation even at low rotational speed
The EC microprocessor-based commutation provides
further features:
• Alarm outputs/speed monitoring
• Simple speed control (no inverter required)
• Closed loop sensor control (demand ventilation)
• Reduced starting current with soft starting
We are the leading exponents of EC
From leadership comes responsibility. This has
informed a corporate philosophy of providing
benefits to customers that are guided by
environmental compatibility and sustainability.
For decades, we’ve followed the lead of our
co-founder Gerhard Sturm: “Every new product
we develop has to be economically and
ecologically superior to its predecessor.”
ebm-papst is a worldwide innovation leader in fan, motor and control technology. Our industry-leading EC (electronically commutated) fans have for years led the way in meeting demand for improved energy efficiency. Our GreenTech philosophy ensures that each of our products is more economically and ecologically superior to
its predecessor.
VSDHVAC
Retrofit with higher efficiency
Energy efficiency means lower operating costs. Our centrifugal fans with GreenTech EC technology are much more advanced than normal fans. So much so, in fact, that even the task of retrofitting existing units quickly pays for itself.
What’s more, our new range has a particularly long
service life with no maintenance needed at all. Which
means further cuts to operating and lifecycle costs.
We even deliver the fans complete with housing and
installed controlled electronics (VSD) to minimise your
installation costs.
The benefits over an obsolete belt drive and flange-
mounted motor are obvious. Instead of having to connect
multiple components to each other at great effort and
expense, RadiFit and RadiPac deliver instant integration,
minimal size and maximum energy efficiency.
RadiFit GreenTech EC centrifugal fan
In comparison, the RadiFit GreenTech EC centrifugal fan has
impressive efficiency and compactness. Thanks to the simple
plug and play exchange system, running costs and maintenance
work are greatly reduced.
RadiPac GreenTech EC centrifugal fan
Again, the comparison is striking. RadiPac comes cleverly
condensed in a plug and play, space-saving cube with impeller,
motor and electronics all optimally adjusted to each other. This
delivers overall efficiency of well above 60%.
Centrifugal fans with belt drive
Centrifugal fans with belt drive and external control electronics
need a lot of space and have high maintenance costs related to
wear-and-tear parts. Often, cheap and inefficient forward curved
blowers are used.
GreenTech EC fan
GreenTech EC fan
Control
Mains supply
VSDHVAC
VSDHVAC
Control
Mains supply
VSDHVAC
VSDHVAC
Simple steps to EC upgrade – alongside you all the way
Stage 1 –
site survey
After our initial feedback, we will consider your needs in more detail and provide an
estimate of the potential savings in energy consumption, carbon and financial cost. We
will also indicate the cost of EC fan installation and payback period.
We have confidence in our estimates but don’t expect you to accept them without
question. So if you proceed with an EC fan upgrade, we will recommend an initial trial
installation to confirm the figures. For example, if we have proposed upgrading 100 fan
coil units, we’ll begin with one or two to confirm the savings before going any further.
Following a successful trial installation, you’ll have all the information you need to
implement a site-wide upgrade. Whether this is done all in one go or in a phased
programme over several months or even years is up to you. Either way, you’ll have the
necessary details of both savings and costs to plan a successful energy reduction project.
The first step is to make a physical survey of your existing equipment to establish how
and what you currently use and what you would like to achieve. There is no cost for this
initial survey to check the feasibility of the project. Our wide experience of all types of
systems means we are adept at quickly giving you advice that will deliver benefits –
including potential savings and payback.
HVAC equipment accounts for 40 per cent of the energy consumption in a commercial building. But you don’t need a complete retrofit or replacement of a system to maximise performance and reduce energy consumption
and maintenance costs. Simply switching to variable EC fans in chillers, air handling units (AHUs) and fan coils will improve
efficiencies and cut costs.
Stage 2 – estimated savings
Stage 3 – trial installation
Stage 4 - site rollout
£
£
£
£500,000 savings at Marks and Spencer
Overview We partnered with AB Group to roll-out 1,404 fans and 258
condensers in 152 Marks and Spencer stores across the UK and
Ireland. The new technology will substantially improve the energy
performance of the refrigeration systems in the stores with total
annual financial savings estimated to be over half a million pounds.
Total project hours of just 4,150 underline the ease of installation.
The project
The project, which encompassed large high street stores and
Simply Food stores, was part of an energy saving exercise to
reduce the carbon footprint across the Marks and Spencer estate.
Before roll-out, an upgrade trial was carried out in a Rotherham
store to establish the energy saving benefits.
Despite the logistical challenge of delivering and installing 1,400
new EC fans (and collecting old AC fans) across the UK and Ireland,
the project took only three months to complete between February
and May 2015. Total project hours of just 4,150 underline the ease
of installation.
In addition to the upgrade, AB Group changed the controls for the
fridge plant to enable a variable 10v output to operate the new EC
fans where necessary.
Following the upgrade, there is estimated to be an annual energy
reduction of 3,265.3 kWh per fan, across the 152 stores, with
an estimated cost saving per fan of £375.51. This represents an
annual saving of £527,223, with payback in less than five years.
The upgrade project also allowed the refrigeration systems to
maintain operation during high ambient temperatures. This is a big
advantage as it retains sales and operation in the stores during
exceptional weather. Other benefits include a noise reduction per
store of up to 7 dB(A).
£500,000 savings at Marks and Spencer
The project took only three months to complete.
Case study 1
Condensers and Chillers Financial
savings
Dramatic reduction in energy use for Diamond Light
Overview
We worked together with Cinque Energy Solutions and Stulz to
provide energy saving solutions for Diamond Light Source, one
of the UK’s leading scientific organisations.
The fans
Existing air-conditioning equipment was upgraded with ebm-papst
EC fans, which dramatically reduced cooling energy consumption.
The project
Stulz asked ebm-papst to carry out a site survey for upgrading some
of its computer room air conditioners. Normally used for datacentre
cooling, the unit was being used to cool electronic equipment rooms
around the perimeter of the Diamond Light Source synchrotron.
Phase one of the project was to upgrade 27 CCD900CW Stulz
downflow CRAC units from their traditional AC forward curved
centrifugal blowers to EC backward curved impellers.
An initial site survey identified what the current solution delivered
in terms of power draw and performance. Suitability for upgrade
also had to be considered. The blowers would be replaced by EC
backward curved impellers, but due to space limitations resulting
from the use of a scoop directing air into the room, the EC solution had
to be mounted within the CRAC unit enclosures rather than below.
The proposed solution was to utilise the excellent energy efficiency
of the latest RadiCal 560mm impeller from ebm-papst. The fans
were mounted into bespoke metalwork frames to angle the airflow
to assist with the air delivery into the room. Metalwork and
assembly was all carried at ebm-papst’s dedicated production area
devoted to custom solutions.
CRAC Units and AHUs
Dramatic reduction in energy use at Diamond Light
What the client said: “As a scientific organisation
the project appealed to us on several levels.
Obviously the financial savings from reduced
energy consumption and increased reliability
were of great importance. Other key benefits are
reduced noise and vibration. One operator says he
now has to give a unit the ‘cuddle test’ to confirm
it is running after the significant reduction in
noise and vibration!”
Case study 2
Financial savings
What David Fairhurst said: “The Scottish Parliament
is committed to reducing its carbon emissions by
more than 40% by 2020. To achieve this we need
to reduce electricity use by at least 40%.
ebm-papst UK claimed that its fans would deliver
at least this level of reduction and that was proved
to be true. EC fans are a step change technology,
much like LED lighting, which has been a very
welcome addition to our carbon management plan.”
Halving power consumption at the Scottish Parliament
Overview
We worked with Airedale International on a fan upgrade project
at the Scottish Parliament building in Edinburgh.
The fans
ebm-papst EC fans were used to upgrade Airedale aircon units
in the building’s computer room, leading to a reduction in power
consumption of approximately 50%.
The project
The Scottish Parliament is dedicated to reducing both carbon
footprint and energy bills. Environmental Performance Manager
David Fairhurst had already made significant improvements to the
building, including a reduction in carbon emissions of 25%.
After we presented him with details of the possible energy savings
of upgrading HVAC equipment to EC fans, he asked us to carry
out a survey. It identified the HVAC equipment that would offer the
greatest potential for energy savings. We then worked alongside
equipment manufacturer Airedale to provide the optimum solution.
Computer room cooling offered the best potential for energy
savings, so an initial trial was carried out on one computer room air
conditioning (CRAC) unit. After excellent results, further installations
were carried out on both CRAC and air handling units (AHUs).
As well as halving power consumption, the project resulted in
initial savings of 11.5 tonnes of carbon per year and a payback
period of 21 months. Further savings are expected when a second
phase is implemented. Overall financial savings of £13,500 per
year are expected, with a reduction in carbon emissions of
20 tonnes per year.
Further savings are expected when a second phase is implemented.
Halving power consumption at the Scottish Parliament
Case study 3
CRAC Units and AHUs Financial
savings
ebm-papst UK Ltd
Chelmsford Business Park
Chelmsford Essex
CM2 5EZ
Phone +44 (0)1245 468555
Fax +44 (0)1245 466336
www.ebmpapst.co.uk
The engineer’s choice